Emulsion Breaking
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Simple Spectrophotometric Determination of Iron in Diesel Oil after Sample Preparation Employing Extraction Induced by Emulsion Breaking
This work reports the development of a simple and fast method for the spectrophotometric determination of Fe in diesel oil using the classic reaction with 1,10-phenanthroline after its extraction induced by emulsion breaking (EIEB). The extraction parameters of EIEB were optimized (concentration of HNO3 and Triton X-100® in the emulsifying solution) as well
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Development of a Methodology Based on Extraction Induced by Emulsion Breaking for Copper Determination in Gasohol by Graphite Furnace Atomic Absorption Spectrometry
The development of a method based on extraction induced by emulsion breaking (EIEB) aiming copper determination in gasohol using graphite furnace atomic absorption spectrometry (GF AAS) is reported. Emulsification of the gasohol samples was carried out using nitric acid solution, (1,1,3,3-tetramethylbutyl)phenyl-polyethylene glycol surfactant (Triton X-114),
J. Braz. Chem. Soc.. Publicado em: 2021-02
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3. Avaliação de diferentes métodos para a determinação de cobre em óleo mineral isolante por espectrometria de absorção atômica com forno de grafite
This aim of this work was to compare two methods for copper determination in insulating oils from power transformers by GFAAS. The first method was extraction induced by emulsion breaking, which determined the preconcentration of copper in an aqueous solution and exhibited a limit of quantification of 0.27 µg L-1. Also, a second method based on the direct i
Quím. Nova. Publicado em: 2014-06
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4. Extração induzida por quebra de emulsão: uma nova estratégia para determinação de metais traços em amostras de óleo / Extração induzida por quebra de emulsão: uma nova estratégia para determinação de metais traços em amostras de óleo / Extraction induced by emulsion breaking: a new strategy for the trace metals determination oil sample / Extraction induced by emulsion breaking: a new strategy for the trace metals determination oil sample
The present work reports the development of a novel methodology for the determination of trace metals in organic liquids. The method is based on the extraction induced by emulsion breaking, which is carried out with the formation of a stable emulsion between the oil (10 mL) and an aqueous phase (2 mL) containing a surfactant and acid. After that, the emulsio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/07/2011
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5. OBTENÇÃO E CARACTERIZAÇÃO DE EMULSÃO PARA CORREÇÃO DE ESCOAMENTO DE ÓLEO PESADO. / OBTAINING AND CHARACTERIZATION OF EMULSION FOR CORRECTION OF HEAVY OIL FLOW.
Extracting and producing heavy oil presents many difficulties, promoted by the nature of the constant quantities involved, such as viscosity of the oil, the means through where it moves the salinity of water, oil composition, the temperature and so forth. In the pumping, the amount of oil which is drawn is not enough to meet the expenses, that is, the cost-e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2010
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6. Viabilidade técnica de uma rota não convencional para a produção de leite de cabra em pó em cooperativas do Rio Grande do Norte
Nowadays, Brazil has both the greatest goat herd and the greatest goat milk production of South America. The state of Rio Grande do Norte, located in northeast of Brazil, has an average year production of three thousand cubic meters of goat milk in natura. Part of this milk production is homemade and it comes from small farms, which unite in rural cooperativ
Publicado em: 2010
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7. Autoxidation of lipids and antioxidation by alpha-tocopherol and ubiquinol in homogeneous solution and in aqueous dispersions of lipids: unrecognized consequences of lipid particle size as exemplified by oxidation of human low density lipoprotein.
Recent studies on the initial stages in oxidation of low density lipoprotein (LDL) have revealed certain previously unrecognized similarities to emulsion polymerization and some quite unexpected features including the following: (i) ascorbate is an extremely effective antioxidant for LDL containing alpha-tocopherol (alpha-TOH); (ii) in the presence of alpha-